Lubrizol Data Scientist Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 8 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Lubrizol.
Lubrizol
Data Scientist
Entry Average Negative experience No offer 1 round
Interview process
Recruiter call Technical screen
Interview formats
Technical Behavioral
I applied online through LinkedIn and then got an email to schedule the interview. It was a Skype call with two people, the HR and the manager. They asked me about 3-4 technical questions related to variable selection, outliers, and comparing methods, along with some general questions. The interview lasted for about an hour. I found the interview to be a bit confusing because some of the technical questions weren't phrased very clearly.
Confirmed questions5 questions
- What is your motivation for wanting to join Lubrizol?
- Could you elaborate on your research?
- What are your views on variable selection?
Lubrizol
Data Scientist
Mid Average Negative experience Accept offer 3 rounds
Interview process
Phone screen Technical screen Onsite
Interview formats
Technical Behavioral Presentation
So, the interview process had 3 main parts. First, a quick call to see if I was a good fit. Then, a technical video chat with two senior data scientists. Finally, a 4-hour session that covered company culture, my technical skills, meeting some of the team, and a 1-hour modeling challenge with a short, casual presentation at the end. Honestly, everyone I talked to was really nice and made the process easy, which is a big reason I accepted the job.
Confirmed questions1 question
- Tell me about designing experiments and how you'd tackle common industry-specific data problems.
Lubrizol
Data Scientist
Entry Average Positive experience No offer 1 round
Interview process
Recruiter call Technical screen
Interview formats
Behavioral Technical
So, first, two interviewers introduce themselves. Then, they ask some general questions to get to know you, like 'tell us about your current project' and 'when are you graduate from the program'. After that, there are several technical questions. The whole thing is about 70 minutes.
Confirmed questions1 question
- What led you to your present position?
Lubrizol Data Scientist Interview Questions
Quoted word for word from Lubrizol interview reports.
“Could you explain the optimization differences between regression models and classification trees/random forests?”
Read reports →“Can you explain what collinearity is and why it's detrimental, particularly to an audience without a technical background?”
Read reports →“Can you describe what outliers are?”
Read reports →“If a small number of outliers are present in your data, what actions would you take?”
Read reports →“Conversely, if 20% of your data consists of outliers, how would you proceed?”
Read report →“What are your views on variable selection?”
Read report →“What would you do if you had 30 observations but 100 predictors, and can you explain your approach in detail?”
Read report →“How would you go about comparing various methods?”
Read report →“What is your motivation for wanting to join Lubrizol?”
Read report →Formats, difficulty and experience
Across all 8 Lubrizol interview reports.